Polyphone attachment.



No. 67I,800 Patents# Apr. 9', I90I.4

N. JENSEN.`

POLYPHONE ATTACHMENT.

(No Model.)

w/rNEssEs.- Y n d /N vE/vro n C BY df" d "f A TTURNE YS UNITED STATES PATENT OFFICE.

NEWMAN .IENSENpOF EUREKA, CALIFORNIA.

POLYPHONE ATTACHMENT.

SPECIFICATION forming part of Letters Patent N o. 671,800, dated April 9, 1901. Application iiled September 14.1900. Serial No. 30,006. (No model.)

T all whom it may concern:

Be it kn own that I, NEWMAN JENSEN, a citizen of the United States, and a resident of Eureka, in the-county of Humboldt and State of California, have invented a new and Improved Polyphone Attachment, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in means for conveying the soundwaves from the reproducers of polyphone and other sound-reproducing apparatus to the horns, to which end the invention consists in certain peculiar features of construction and arrangements of parts, which will be fully described hereinafter and defi nedin the claims.

This specification is the disclosure of one form of the invention, while the claims dcine the actual scope thereof.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

l of turningaround the tube.

Figure 1 is a plan view of the invention. Fig. 2 is a sectional elevation indicating the position of the invention with respect to the adjacent device, and Fig. 3 isa rear elevation of the invention.

A main or body portion in the form of a plate a is provided, which is adapted to be fastened to any suitable stationary support, (indicated by the dotted lines a in Fig. 2.) This plate c. has two tubes Co2 passing therethrough. These tubes are here shown asintegral with the platen, and thisisa preferred construction. It is obvious, however, that the tu bes a2 could be made separate from the plate a and fastened thereto. The tubes a2 carry the horns at their upper ends, as indicated bythe dotted lines b in Fig. 2. The lower end of each tube 0.2 has an elbow-tube c fitted loosely thereon, so as to be capable These elbows c are lsupported byfa rod d, suspended from the plate a, which rod carries at its lower end a cross-piece d', the ends of which receive screws d2, standing vertically and having their upper ends formed with recesses, in which are pivotally fitted projections c' on the elbows c. c' of each'elbow-tube c are arranged coinci- The screws d2 and the projections dent with the longitudinal axis of the corresponding tube a2, so as to -sustain the elbowtubes o, permitting them to turn freely around such axis. To each elbow-tube cis connected a telescopic tube comprising sections e and e', the section e being adjacent to the elbow c and having an elbow-like end e2 thereon,

which fits into the elbow c and is joined thereto by a pivot e3, thus enabling the telescopic tube e e' to swing on the elbow c, it being understood that the end e2 and the elbow c are projected past each other, so that the telescopic tube may swing freely around the hinge e3 without breaking the contiguity of the sound-conduit formed by the parts c and e.

The reproducers of the polyphone (indicated by tlle dotted lines f in Eig. 2) are respectively connected with elbow-tubes g, the upper or elbowed ends thereof respectively receiving the elbowed ends c4 of the sections c' of the telescopic tubes, the parts g and c' being joined to each other by hinges or pivots c5, similar to the pivots e3, hereinbefore referred to. This connection between the parts e and g is similar to that between the parts e and c, it being understood that the positions of the pivots e5 and e3 are reversed, or, in other words, the elbows o project up from the telescopic tube and the elbows g project down therefrom.

By this construction a continuous and unbroken sound-cond uit is formed from the reproducers to the horns, and, further, the reproducers are permitted to move freely over the record, the various parts c, e, e', and gV permitting this free movement of the reproducers without interfering with the contiguity ofthe sound-conduit formed by the said parts. -The parts e, e', and g may swing with the elbows c around the axes of the screws d2. The g sections c' of the telescopic tubes and the elbows g may have turning movement around i the axes of the sections e of the telescopic tubes, and, lastly, the elbows g may move on the ends c4 of the sections e and the telescopic tubes, with the elbows g, may swing;lr

IOO

1. An attachment for polyphone or other sound-reproducing apparatus, comprising a telescopic tube, and an elbow-tube at each end of the telescopic tube, the elbow-tubeaS-beiug hingedly mounted on the telescopic tube and the telescopic tubehaving'elbowed portions respectively Working with the elbow-tubes.

2. An attachment for polyphones or other sound-reproducingapparatus,comprising two tubes having elbowed portions itting loosely the one Within the other, such tubes being hingedly or pivotally connected to permit their adjustment, for the purpose specified.

3. An attachment for polyphones or other sound-reproducing apparatus, comprising a stationary tube, an elbow-tube arranged to turn around the same, a supporting device for the elbow-tube, such device comprising a pivot-bearing coincident with the axis of the turning of the elbow-tube, and an additional tube having connection with the elbow-tube.

4. An attachment for polyphone or other sound-reproducing apparatus, having an `elelbow-tube, and an additional tube in communication with the elbow-tube.

5. An attachment for polyphone or other Vmsoundqeproducing apparatus, comprising a stationary tube adapted t0 have connection with a member from which the sound is emitted to the atmosphere,an elbow-tube arranged to turn around the stationary tube, a supporting device for the elbow-tube, such supporting device comprising a pivot-bearing coincident with the axis of the turning of the t elbow-tube, a telescopic tube, one end of which has an elbow Working with the said elbow-tube and hingedly connected thereto, and a second elbow-tube hingedly connected with the other end of the telescopic tube, said end of the telescopic tube having an elbow working With the second elbow-tube.

In testimony whereof I have signed my name to this specification inthe presence of two subscribing witnesses.

NEWMAN JENSEN.

Y Witnesses:

E. P. CAMPBELL,

M. W. l-IEURIE. 

